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hunterjoe21 Super Member
Joined: Mar 30, 2007 Posts: 1486 Location: Miles City, Montana
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Posted: Fri Aug 17, 2007 6:34 pm Post subject: Re: Gun Nut's Quiz |
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12 of 15
_________________ My 1911 is more effective than your 911. |
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Handloader Super Member
Joined: Aug 22, 2005 Posts: 1032 Location: Phoenix, Arizona
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Posted: Fri Aug 17, 2007 8:17 pm Post subject: Re: Gun Nut's Quiz |
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GroovyJack wrote: |
. . . .
If it makes any sense ( no comments from pnut gallery ) , I can understand the concept very easily , but have never actually "seen" any actual proof ..
Similar to the concept , and this one can be shown with a strain gauge , of a pressure pulse at the muzzle .. I forget the whole idea , all my Handloader rags went up in the fire , but Barsness wrote about it a couple years ago .. Doesnt happen all the time , seems until you find the sweet spot , it happens and once you have the supposedly perfect powder/bullet match , it goes away ..
HL , you remember this one ?? |
Howdy GroovyJack
The primary powder of concern for SPE (Secondary Pressure Excursion was one lable for the phenom) was surplus H4831. Different lots had more variation in burn rate than is normal. Both "Handloader" and "Rifle" magazines (1970s) carried article and speculation about the matter, however, to my recollection, it was never demonstrated in controlled situations and could never be duplicated from claimed loads. Still, something caused all that furor it would seem.
Reduced loads cause powder distribution in the case to vary. It may have been one of the cited reasons for SPE. Yet, the passage of time has opened new avenues of information about how primers actually effect powder charges. Remember the question in the quiz about the front primer tube ignition? It was a product of trying to get standard primers to more thoroughly burn slower powders. Today we know why it didn't really work that way.
Powder doesn't burn from the cartridge base uniformly forward to the base of the bullet. Given proper primer brissilance, powder burns simultaneously from base to front, from front to back, from side to center, from center to side. And all directions in between.
I'll have to do some searching for period articles or any new information on SPE. May take awhile. In the interim, perhaps, the matter is solely academic as most of today's handloaders wouldn't use reduced charges of slow burning powder anyway when far better options are available. My testing was intended to try to produce SPE. Since only 200 rounds total were fired, there is not enough data to support either the pro or con.
Oh well, issues like these only detract from time at the loading bench and I am far behind in my case stuffing efforts. So, I'll put the matter on the back burner to simmer while I address more pertinent things. But, I am still interested in any experiences forum members may have had. PM or post, please, if you have anything to add to the subject.
_________________ R90/6, K1200RS, R1150R |
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Vince Site Admin
Joined: May 25, 2005 Posts: 15721 Location: Brisbane AUSTRALIA
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GroovyJack Member
Joined: May 21, 2005 Posts: 621 Location: Bama
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Posted: Sat Aug 18, 2007 1:24 am Post subject: Re: Gun Nut's Quiz |
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HL this was in Handloader in the last couple years , he showed it on paper ..
Actually it makes for some good writing , but in reality the phenomena dont amount to nuthin' ..
_________________ My Goal In Life Is To Be As Good Of A Person As My Dog Already Thinks I Am |
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Archie Rookie Member
Joined: Oct 01, 2007 Posts: 2 Location: Long Beach, PDSR California
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Posted: Sun Sep 30, 2007 11:06 pm Post subject: Re: Gun Nut's Quiz |
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I got them all. I've been reloading for thirty-six years or so.
Yeah, the 'light load of slow powder' theory has never been proven, but there's something to it. There's some bit of information we don't have - or don't recognize - yet.
The other question that's a little 'iffy' is about the .35 Whelen. Late information indicates the Colonel had more to do with it than previously thought. But the heavy lifting went to the accepted inventors.
And I've never had, but still want, a 250-3000 Savage 99.
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Pumpkinslinger Super Member
Joined: Sep 22, 2007 Posts: 5002 Location: NC foothills
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Posted: Mon Oct 01, 2007 1:46 am Post subject: Re: Gun Nut's Quiz |
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14 of 15. Missed the one about slow burning powder for cannons, was thinking much bigger cannon!
_________________ Mike
"I ain't no better than anybody else, and there ain't nobody better than me!" Ma Kettle |
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ElyBoy Super Member
Joined: Apr 04, 2006 Posts: 1541 Location: Forest Lake Minnesota
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Posted: Mon Oct 01, 2007 1:20 pm Post subject: Re: Gun Nut's Quiz |
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15 out of 15 correct.
Too easy and simple.
Third grade stuff for a PRO like me.
Come on---give me something that taxes my BRAIN!!!
Been reloading for sixty years now, and I'm only fifty six.
THAT'S how much more I KNOW than YOU GUYS!!!!
Eric
_________________ NRA Certified Chief Range Safety Officer
NRA Certified Pistol Instructor
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Bushmaster Super Member
Joined: Jun 12, 2005 Posts: 11393 Location: Ava, Missouri
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Posted: Mon Oct 01, 2007 1:41 pm Post subject: Re: Gun Nut's Quiz |
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_________________ I have one nerve left and yer standin' on it...
DEMOCRACY Two wolves and one sheep voting on what to have for lunch...
LIBERTY A well armed sheep contesting the outcome of the vote... |
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ElyBoy Super Member
Joined: Apr 04, 2006 Posts: 1541 Location: Forest Lake Minnesota
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Posted: Mon Oct 01, 2007 2:04 pm Post subject: Re: Gun Nut's Quiz |
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_________________ NRA Certified Chief Range Safety Officer
NRA Certified Pistol Instructor
DNR Certified Firearms Safety Instructor
NRA Life Member |
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sniper Super Member
Joined: Aug 18, 2005 Posts: 735 Location: Utah
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Posted: Sat Oct 06, 2007 5:46 am Post subject: Re: Gun Nut's Quiz |
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14 out of 15 ----I didn't know that a .700 was commercially available. Drat! Leave it to the Brits!
S E E has been the cause of lots of discussion, but from what I recall, while there are some reasonable-sounding theories, NOBODY can say for sure what causes it.
In my youth, I used ~2.5 gr. Unique/158gr. cast SWC in my 357 Maggie, with the result that a little kid at the range that day asked his mom; "Why is that man pounding on his gun?" (Driving the stuck bullet out!)
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con10der Rookie Member
Joined: Oct 17, 2007 Posts: 15
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Posted: Thu Oct 18, 2007 1:11 pm Post subject: Re: Gun Nut's Quiz |
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13 out of 15 i missed the british question and i forget what the other was
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Deleted_User_2665 Super Member
Joined: May 06, 2006 Posts: 380
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Posted: Fri Oct 19, 2007 3:30 pm Post subject: Re: Gun Nut's Quiz |
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Your score is: 15 out of 15
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d_hoffman Super Member
Joined: Feb 13, 2007 Posts: 696 Location: Chillicothe, Ohio
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Posted: Fri Oct 19, 2007 11:42 pm Post subject: Re: Gun Nut's Quiz |
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14/15, missed #7 or #8. Oh well doesn't really matter.
_________________ The best form of gun control...aim straight!!! |
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K.W. Super Member
Joined: Mar 19, 2007 Posts: 348 Location: Finland
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Posted: Sun Oct 21, 2007 9:08 am Post subject: Re: Gun Nut's Quiz |
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It was easy, but I had only 13 / 15 because I cant read so god in English. Question aboat .35 Wheelen, I did´nt knew.
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glockman55 Super Member
Joined: Dec 12, 2005 Posts: 831 Location: Michigan
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